AuthorSheri Amsel takes you on a journey through the body, with information on:The muscles--from your biceps to your heartYour nerves and how they transmit messagesHow your skin heals itselfBones, joints, and other things you should not breakBlood, guts, and the circulation systemHow your body digests food (it is not always pretty!)Why you need air and how breathing worksWith more than 30 different